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Apparatus and methods for establishing virtual private networks in a broadband network

Active Publication Date: 2002-09-12
TELLABS SAN JOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

0012] The invention allows service providers to reduce multiple overlay networks by creating multiple logical service networks (LSNs) on a physical or optical fiber network. The LSNs are established by the service provider and can be characterized by traffic type, bandwidth, delay, hop count, guaranteed information rates and/or restoration priorities. Once established, t

Problems solved by technology

One major drawback of the ATM / FR technique 104 is that this type of network is not scalable.
One major drawback of a best effort delivery is the lack of guarantees that a packet will be delivered at all.
Thus, this is not a good candidate when transmitting critical data.

Method used

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  • Apparatus and methods for establishing virtual private networks in a broadband network
  • Apparatus and methods for establishing virtual private networks in a broadband network
  • Apparatus and methods for establishing virtual private networks in a broadband network

Examples

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Embodiment Construction

[0019] FIG. 2 schematically illustrates exemplary virtual path switched layers 200 in accordance with an embodiment of the invention. The virtual path switched layers 200 combine switching and routing to provide virtual services. In particular, the virtual path switched layers 200 combine the strengths of layer 106 (i.e., scalability and flexibility) and layer 202 (i.e., security and quality of service). In FIG. 2, a multi-protocol label switching (MPLS) switched layer 202 replaces the ATM / FR switched layer 104 in FIG. 1. Multiple label switched path trunks (LSP trunks) are set up as trunk groups in the optical transport layer 102 for transporting multiple virtual routing services (VRS) paths 206. The LSP trunks allow service providers to engineer traffic. In an exemplary embodiment, virtual routed networks 204 are located at the edge of the MPLS switched layer 202. The VRS paths 206 are connected to virtual routed networks 204 via the MPLS switched layer 202. In one embodiment, VRS...

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Abstract

Service providers can reduce multiple overlay networks by creating multiple logical service networks (LSNs) on the same physical or optical fiber network. The LSNs are established by the service provider and can be characterized by traffic type, bandwidth, delay, hop count, guaranteed information rates and / or restoration priorities. Once established, the LSNs allow the service provider to deliver a variety of services to customers depending on customer's traffic specifications. Different traffic specifications are serviced on different LSNs, depending on each LSN's characteristics. Such LSNs, once built within a broadband network, can be customized and sold to multiple customers.

Description

RELATED APPLICATIONS[0001] This application relates to an application entitled "Apparatus and Methods for Managing Packets in a Broadband Data Stream" filed on Dec. 15, 2000, bearing Ser. No. 09 / 737,916, an application entitled "Apparatus and Methods for Scheduling Packets in a Broadband Data Stream" filed on Dec. 15, 2000, bearing Ser. No. 09 / 737,917, and an application entitled "Apparatus and Methods for Processing Packets in a Broadband Data Stream" filed on Sep. 13, 2000, bearing Ser. No. 09 / 661,244. These related applications are hereby incorporated by reference for all purposes.FIELD OF THE INVENTION[0002] This invention relates to apparatus and methods for establishing virtual private networks. In particular, this invention relates to apparatus and methods for establishing virtual private networks in a broadband network.BACKGROUND OF THE INVENTION[0003] As the Internet evolves into a worldwide commercial data network for electronic commerce and managed public data services, i...

Claims

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Application Information

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IPC IPC(8): H04L12/46H04L45/50H04L12/56H04Q11/00
CPCH04L12/4604H04L12/66H04L45/50H04Q11/0062H04Q2011/0084H04Q2011/0086H04Q2011/009H04L41/0893H04L41/32H04L41/0894
Inventor KAZBAN, MICHAELHALABI, MITRIKOENIG, KENSIRKAY, VINAI
Owner TELLABS SAN JOSE
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